However, you may receive an error message “user is not part of the Enterprise
Admins group” during the upgrade process, if you select the Express install
option. It seems like there is an issue using Express option during the upgrade
process. The workaround for this issue is to use Customize option and complete
the upgrade/installation process.

2
comments:

I need a help from you. While setting permissions in a folder my colleague erroneously deleted all default permission . Now it displays unable to set owner. While trying to take ownership through GUI as well as using takeown ... it denies the access. please help us.